1. Ageing and Stroke Medicine Section; Norwich Medical School; Faculty of Medicine and Health Sciences; University of East Anglia; Norwich Norfolk UK
2. Aberdeen Gerontological and Epidemiological Interdisciplinary Research Group; Epidemiology Group; Institute of Applied Health Sciences; School of Medicine and Dentistry; University of Aberdeen; Aberdeen Aberdeenshire UK
3. Academic Centre for Applied Clinical and Translational Research into Ageing; Department of Medicine for the Elderly; Aberdeen Royal Infirmary; National Health Service Grampian; Aberdeen Aberdeenshire UK